CN103011571A - Method for welding panel glass of display - Google Patents
Method for welding panel glass of display Download PDFInfo
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- CN103011571A CN103011571A CN2012105286557A CN201210528655A CN103011571A CN 103011571 A CN103011571 A CN 103011571A CN 2012105286557 A CN2012105286557 A CN 2012105286557A CN 201210528655 A CN201210528655 A CN 201210528655A CN 103011571 A CN103011571 A CN 103011571A
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Abstract
The invention discloses a method for welding panel glass of a display. Ultrashort pulse laser is utilized to generate an optical near-field enhancement effect near contact points of the inner surfaces of the panel glass of the display and a glass fiber (or glass bead) spacer (which is positioned between the panel glass of the display), so as to generate multiphoton absorption (ionization) and provide seed electrons, and long pulse laser can be absorbed by the seed electrons; and when melting threshold values of the glass fiber (or glass bead) spacer and the panel glass of the display are reached, two pieces of panel glass of the display are fused and connected together. Along with movement of a laser focus according to a predesigned route, welding and packaging of the panel glass of the integral display are implemented. The method reduces cost of only using the ultrashort pulse laser to weld the glass, improves welding efficiency and implements welding and packaging of the panel glass of the display.
Description
Technical field
The present invention relates to the welding to transparent material, particularly a kind of method that display pannel glass is welded.
Background technology
Indicating meter is extensive application in a lot of fields.But the connection of display pannel glass (encapsulation) problem never is well solved.Mainly be to utilize the Chemical bonding agent at present, such connection can not guarantee good mechanical property, and good thermostability and chemical stability.
People have proposed the method for ultra-short pulse laser glass for bonding recently.The ultra-short pulse laser peak power is high, can realize multiphoton absorption (ionization), namely laser beam can see through glass surface, and the energy-flux density at the laser spot place can meet or exceed multiphoton absorption (ionization) threshold value, glass melts, and realizes laser welding.But the ultra-short pulse laser cost is high, power is less, and welding efficiency is restricted, and becomes the bottleneck of practical application.
Long Pulse LASER technology maturation is applied to industrial production, but, peak power is lower, after inside glass focuses on, be not enough to realize multiphoton absorption (ionization), can only utilize the metallic impurity in the glass to absorb Long Pulse LASER, and metallic impurity distribute and can't be effectively controlled, therefore Long Pulse LASER can not carry out effective inside glass and process in the situation that do not dose absorption layer, can only carry out glass surface treatment.
Summary of the invention
The invention provides a kind of method that display pannel glass is welded, present method has reduced cost, has improved welding efficiency, has realized the welding to inside glass, sees for details hereinafter to describe:
A kind of method that display pannel glass is welded said method comprising the steps of:
(1) select two kinds of laser that can see through first piece substrate, the second sheet glass substrate and glass spacer to be welded, a kind of is ultra-short pulse laser, and another kind is Long Pulse LASER, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle;
(2) regulate laser optical path, so that laser focuses on described glass spacer and the first piece point of contact from the top by the first object lens; The optical near-field reinforcing effect occurs in laser near described the second sheet glass substrate upper surface and glass spacer point of contact; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the point of contact described the second sheet glass substrate upper surface generation multiphoton absorption ionization, produce unbound electron, i.e. the first seed electrons, the described Long Pulse LASER of described the first seed electron absorption;
(3) near described glass spacer and first piece point of contact, produce the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption;
(4) when the energy of the described Long Pulse LASER of described the first seed electrons and described the second seed electron absorption reaches the melting threshold of described glass spacer, described first piece substrate and described the second sheet glass substrate, melt near the point of contact of described glass spacer and described first piece substrate and described the second sheet glass substrate, described first piece substrate and the fusion of described the second sheet glass substrate are linked together;
(5) along with the route of laser along in advance design scans, described first piece substrate and described the second sheet glass substrate welds are packaged together.
Near described second seed electrons that produces described glass spacer and first piece point of contact is specially:
Improve the energy of ultra-short pulse laser, when the ultra-short pulse laser intensity of described first piece substrate lower surface and described glass spacer contact position during more than or equal to described first piece substrate and glass spacer multiphoton absorption threshold value, multiphoton absorption ionization occurs near described first piece substrate lower surface and the glass spacer point of contact, produce unbound electron, i.e. the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption.
Near described second seed electrons that produces described glass spacer and first piece point of contact is specially:
Alternative is selected ultra-short pulse laser and the Long Pulse LASER that can see through described first piece substrate, described the second sheet glass substrate and described glass spacer to be welded, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle;
Focus on described glass spacer and the second sheet glass point of contact from the below by the second object lens, the optical near-field reinforcing effect occurs in laser near described first piece lower surface and glass spacer point of contact; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the point of contact described first piece substrate lower surface generation multiphoton absorption ionization, produce unbound electron, i.e. the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption;
Described glass spacer is specially: glass fibre or granulated glass sphere.
The beneficial effect of technical scheme provided by the invention is: utilize ultra-short pulse laser that the optical near-field reinforcing effect occurs near (between the display pannel glass) glass fibre (or granulated glass sphere) introns (spacer) and display pannel glass contact point, produce multiphoton absorption (ionization), seed electrons is provided, utilize seed electrons just can absorb Long Pulse LASER, when reaching glass fibre (or granulated glass sphere) introns and display pannel glass melting threshold value, two display pannel glass are linked together.Along with the route of laser spot by in advance design moves, realize the welding encapsulation of whole display pannel glass.Present method has reduced only uses the cost of ultra-short pulse laser glass for bonding, and has improved welding efficiency, has realized the welding encapsulation to display pannel glass.
Description of drawings
Fig. 1 is the laser intensity scatter chart;
Fig. 2 is the structural representation that the present invention adopts device;
Fig. 3 is another structural representation that the present invention adopts device;
Fig. 4 is the schema of a kind of method that display pannel glass is welded provided by the invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
1: multiphoton absorption threshold value light intensity; 2: spot diameter;
3: the laser intensity distribution curve; 4: laser beam;
5: the first object lens; 6: the first piece substrate;
7: the second sheet glass substrates; 8: glass fibre (or granulated glass sphere) introns (spacer);
9: the second object lens; 10: laser beam.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In order to reduce cost, to improve welding efficiency, realize the welding of counter plate glass, the embodiment of the invention provides a kind of method that display pannel glass is welded, and referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the method may further comprise the steps:
101: select two kinds of laser that can see through first piece substrate 6, the second sheet glass substrate 7 and glass spacer (spacer) 8 to be welded, a kind of is ultra-short pulse laser, another kind is Long Pulse LASER, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle;
During specific implementation, determine wavelength and the power of two kinds of laser according to the glass spacer in the practical application (spacer) 8, first piece substrate 6 and the second sheet glass substrate 7, it is femtosecond or picosecond level that ultra-short pulse laser is chosen pulse width usually; Long Pulse LASER is chosen any one in nanosecond, microsecond, millisecond or the continuous laser usually, and the embodiment of the invention does not limit this.
Wherein, two kinds of pulse lasers are regulated so that laser pulse is synchronous, and also the step of bundle is conventionally known to one of skill in the art, the embodiment of the invention is not done at this and is given unnecessary details.
Wherein, glass spacer (spacer) 8 is preferably: glass fibre or granulated glass sphere, the embodiment of the invention does not limit this.
102: first piece substrate 6 and the second sheet glass substrate 7 are stacked together, and are glass spacers (spacer) 8 between first piece substrate 6 and the second sheet glass substrate 7;
103: regulate laser optical path, so that laser focuses on first piece substrate 6 and glass spacer (spacer) 8 point of contact from the top by the first object lens 5; The optical near-field reinforcing effect occurs near the second sheet glass substrate 7 upper surfaces (the glass spacer point of contact) in laser; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the second sheet glass substrate 7 upper surface generation multiphoton absorption ionizations the point of contact produce unbound electron, i.e. the first seed electrons, the first seed electron absorption Long Pulse LASER;
Wherein, near the scope the point of contact is relevant according to the glass selection of reality etc., and during specific implementation, the embodiment of the invention does not limit this.
104: near glass spacer (spacer) 8 and first piece point of contact, produce the second seed electrons;
Wherein, producing the second seed electrons near glass spacer 8 and first piece point of contact is specially:
Referring to Fig. 2, improve the energy of ultra-short pulse laser, when the ultra-short pulse laser intensity of first piece substrate 6 lower surfaces and glass spacer (spacer) 8 contact positions during more than or equal to first piece substrate 6 and glass spacer (spacer) 8 multiphoton absorption threshold value, multiphoton absorption ionization occurs near first piece substrate 6 lower surfaces and glass spacer (spacer) 8 point of contact, produce unbound electron, i.e. the second seed electrons, the second seed electron absorption Long Pulse LASER;
Or,
Referring to Fig. 3, alternative is selected ultra-short pulse laser and the Long Pulse LASER that can see through first piece substrate 6, the second sheet glass substrate 7 and glass spacer 8 to be welded, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle; Focus on glass spacer (spacer) 8 and the second sheet glass point of contact from the below by the second object lens 9, the optical near-field reinforcing effect occurs in laser near first piece substrate 6 lower surfaces and glass spacer (spacer) 8 point of contact; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the first piece substrate 6 lower surface generation multiphoton absorption ionizations the point of contact produce unbound electron, i.e. the second seed electrons, the second seed electron absorption Long Pulse LASER.
During specific implementation, when ultra-short pulse laser intensity reaches (or surpassing) multiphoton absorption (ionization) threshold value, multiphoton absorption (ionization) occurs near glass spacer (spacer) 8 and the display pannel glass substrate point of contact, produces unbound electron in this zone.
105: when the energy of the Long Pulse LASER that absorbs when seed electrons reaches the melting threshold of glass spacer (spacer) 8, first piece substrate 6 and the second sheet glass substrate 7, glass spacer (spacer) 8 melts with the point of contact of first piece substrate 6 and the second sheet glass substrate 7 is neighbouring, and first piece substrate 6 and 7 fusions of the second sheet glass substrate are linked together;
106: along with the route of laser along in advance design scans, first piece substrate 6 and 7 welding of the second sheet glass substrate are packaged together.
Wherein, melting threshold need to be set according to the glass substrate in the practical application and glass spacer (spacer) 8, and the embodiment of the invention does not limit this during specific implementation.
The below is described in detail present method with specific embodiment:
Two first piece substrates 6 and the second sheet glass substrate 7(have been finished other preparation technology, such as electrode etc.) be stacked together, be glass fibre (or granulated glass sphere) introns (spacer) 8 between first piece substrate 6 and the second sheet glass substrate 7.Secondly, select two kinds of laser that can see through first piece substrate 6 to be welded, the second sheet glass substrate 7 and glass fibre (or granulated glass sphere) introns (spacer) 8, a kind of is that ultra-short pulse laser employing pulse width is that 1 ~ 10000 femtosecond, repetition rate are that 0.001 ~ 100MHz, power are that 0.01 ~ 100W, wavelength are femtosecond or the picosecond laser vibrator (or amplifier) of 1040nm; Another kind be long pulse (nanosecond/microsecond/millisecond/continuously) laser (repetition rate is that 1 ~ 1000W, wavelength are 1040nm with ultra-short pulse laser coupling, power) as laser source, regulate two bundle laser synchronizations after, and restraint; Making and restrainting rear laser is that 0.01 ~ 2.0 first object lens 5 focus on first piece substrate 6 to be welded and glass fibre (or granulated glass sphere) introns (spacer) 8 point of contact from the top by numerical aperture.Laser is near the second sheet glass substrate 7(and glass spacer point of contact) generation optical near-field reinforcing effect.When (enhancing) ultra-short pulse laser intensity during more than or equal to multiphoton absorption ionization threshold value light intensity 1, near the point of contact the second sheet glass substrate 7 upper surface generation multiphoton absorption ionizations, produce unbound electron, i.e. the first seed electrons, the first seed electron absorption Long Pulse LASER;
Or selection can see through the in addition two bundle laser of first piece substrate 6, the second sheet glass substrate 7 and glass spacer 8 to be welded, and behind the bundle.Focus on glass spacer (spacer) 8 and the second sheet glass 7 point of contact from the below by the second object lens 9, the optical near-field reinforcing effect occurs near first piece substrate 6 lower surfaces (the glass spacer point of contact) in laser; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the first piece substrate 6 lower surface generation multiphoton absorption ionizations the point of contact produce unbound electron, i.e. the second seed electrons, the second seed electron absorption Long Pulse LASER; At last, when the energy of the Long Pulse LASER that absorbs when seed electrons reaches glass fibre (or granulated glass sphere) introns (spacer) 8, first piece substrate 6 and the second sheet glass substrate 7 melting threshold, glass fibre (or granulated glass sphere) introns (spacer) 8 melt with the point of contact of first piece substrate 6 and the second sheet glass substrate 7 is neighbouring, and first piece substrate 6 and 7 fusions of the second sheet glass substrate are linked together.Along with the route of laser along in advance design scans, whole display pannel glass solder seal is fitted together.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the method that display pannel glass is welded is characterized in that, said method comprising the steps of:
(1) select two kinds of laser that can see through first piece substrate, the second sheet glass substrate and glass spacer to be welded, a kind of is ultra-short pulse laser, and another kind is Long Pulse LASER, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle;
(2) regulate laser optical path, so that laser focuses on described glass spacer and the first piece point of contact from the top by the first object lens; The optical near-field reinforcing effect occurs in laser near described the second sheet glass substrate upper surface and glass spacer point of contact; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the point of contact described the second sheet glass substrate upper surface generation multiphoton absorption ionization, produce unbound electron, i.e. the first seed electrons, the described Long Pulse LASER of described the first seed electron absorption;
(3) near described glass spacer and first piece point of contact, produce the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption;
(4) when the energy of the described Long Pulse LASER of described the first seed electrons and described the second seed electron absorption reaches the melting threshold of described glass spacer, described first piece substrate and described the second sheet glass substrate, melt near the point of contact of described glass spacer and described first piece substrate and described the second sheet glass substrate, described first piece substrate and the fusion of described the second sheet glass substrate are linked together;
(5) along with the route of laser along in advance design scans, described first piece substrate and described the second sheet glass substrate welds are packaged together.
2. a kind of method that display pannel glass is welded according to claim 1 is characterized in that, near described second seed electrons that produces described glass spacer and first piece point of contact is specially:
Improve the energy of ultra-short pulse laser, when the ultra-short pulse laser intensity of described first piece substrate lower surface and described glass spacer contact position during more than or equal to described first piece substrate and glass spacer multiphoton absorption threshold value, multiphoton absorption ionization occurs near described first piece substrate lower surface and the glass spacer point of contact, produce unbound electron, i.e. the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption.
3. a kind of method that display pannel glass is welded according to claim 1 is characterized in that, near described second seed electrons that produces described glass spacer and first piece point of contact is specially:
Alternative is selected ultra-short pulse laser and the Long Pulse LASER that can see through described first piece substrate, described the second sheet glass substrate and described glass spacer to be welded, and the power of two bundle laser is complementary, and regulates behind the two bundle laser synchronizations and bundle;
Focus on described glass spacer and the second sheet glass point of contact from the below by the second object lens, the optical near-field reinforcing effect occurs in laser near described first piece lower surface and glass spacer point of contact; When the ultra-short pulse laser intensity that strengthens during more than or equal to the multiphoton absorption threshold value, near the point of contact described first piece substrate lower surface generation multiphoton absorption ionization, produce unbound electron, i.e. the second seed electrons, the described Long Pulse LASER of described the second seed electron absorption.
4. according to claim 1 and 2 or 3 described a kind of methods that display pannel glass is welded, it is characterized in that, described glass spacer is specially: glass fibre or granulated glass sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528655.7A CN103011571B (en) | 2012-12-06 | 2012-12-06 | Method for welding panel glass of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528655.7A CN103011571B (en) | 2012-12-06 | 2012-12-06 | Method for welding panel glass of display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103011571A true CN103011571A (en) | 2013-04-03 |
| CN103011571B CN103011571B (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210528655.7A Expired - Fee Related CN103011571B (en) | 2012-12-06 | 2012-12-06 | Method for welding panel glass of display |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449439A (en) * | 2016-09-27 | 2017-02-22 | 华中科技大学 | Glass chip packaging method |
| CN106925891A (en) * | 2017-05-05 | 2017-07-07 | 湖南理工学院 | It is a kind of while the method for realizing multiple pieces of glass encapsulation and internal processing |
| CN110856886A (en) * | 2018-08-16 | 2020-03-03 | 通快激光与***工程有限公司 | Soldering method for connecting a transparent first substrate and a non-transparent second substrate and use thereof |
| US10781129B2 (en) | 2017-01-19 | 2020-09-22 | Corning Incorporated | Fusing glass articles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010038544A1 (en) * | 2009-10-19 | 2011-04-21 | Robert Bosch Gmbh | Sensor device for a packaging machine |
| WO2011115242A1 (en) * | 2010-03-16 | 2011-09-22 | アイシン精機株式会社 | Method for lap-joint bonding of two substances by laser, and bonding device |
| WO2011115243A1 (en) * | 2010-03-16 | 2011-09-22 | アイシン精機株式会社 | Pulse laser device, transparent member welding method, and transparent member welding device |
-
2012
- 2012-12-06 CN CN201210528655.7A patent/CN103011571B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010038544A1 (en) * | 2009-10-19 | 2011-04-21 | Robert Bosch Gmbh | Sensor device for a packaging machine |
| WO2011115242A1 (en) * | 2010-03-16 | 2011-09-22 | アイシン精機株式会社 | Method for lap-joint bonding of two substances by laser, and bonding device |
| WO2011115243A1 (en) * | 2010-03-16 | 2011-09-22 | アイシン精機株式会社 | Pulse laser device, transparent member welding method, and transparent member welding device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449439A (en) * | 2016-09-27 | 2017-02-22 | 华中科技大学 | Glass chip packaging method |
| CN106449439B (en) * | 2016-09-27 | 2018-11-02 | 华中科技大学 | A kind of glass-chip packaging method |
| US10781129B2 (en) | 2017-01-19 | 2020-09-22 | Corning Incorporated | Fusing glass articles |
| CN106925891A (en) * | 2017-05-05 | 2017-07-07 | 湖南理工学院 | It is a kind of while the method for realizing multiple pieces of glass encapsulation and internal processing |
| CN110856886A (en) * | 2018-08-16 | 2020-03-03 | 通快激光与***工程有限公司 | Soldering method for connecting a transparent first substrate and a non-transparent second substrate and use thereof |
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| Publication number | Publication date |
|---|---|
| CN103011571B (en) | 2015-02-11 |
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